The Snake God with SSS Rank Evolution System

Expedition Group - Depth of the forest area dungeon

The air in the upper tunnels of the forgotten dungeon was stale, thick with dust and the faint, metallic scent of old water. It was a silence that felt heavy, watchful. That silence was now broken by the methodical clank of armored boots and the low murmur of tense voices.

A column of thirty figures moved with practiced caution. At its heart was a mix of hardened knights in Solarian steel and professional adventurers in reinforced leathers and enchanted cloth. They were a substantial force, a clear escalation from the scout-and-suppress team that had been lost.

At the front, Tia, the Deputy Guild Master who had barely escaped with her life, pointed a steady finger down a jagged, downward-sloping passage. Her face was pale under a layer of road dust, but her eyes were hard with grim recollection. ”...We tried to go deeper into the dungeon and sensed something ahead of them. That’s when we discovered... a major anomaly.”

Walking beside her, his massive frame nearly brushing the tunnel ceiling, was the leader of this expedition. Derek, an S-Rank adventurer known as the ”Crimson Boulder,” had hair the color of furnace embers and eyes like cooled coals that missed nothing. His voice was a low rumble, like stones grinding deep in the earth.

”Resmond was a stubborn fool, but he was no rookie. I didn’t think this pit would be the one to bury him.” There was less grief in his tone than cold, professional assessment.

On his other flank, a woman moved with an archer’s grace. Ellen, her long blonde hair tied back in a severe braid, scanned the darkness with sharp green eyes that held no mercy for foolishness. ”It’s a forgotten delve for a reason, Derek,” she stated, her voice crisp. ”The mana signatures here are old and twisted. Resmond let his grief for Kaela cloud his judgment. Charging in without full reconnaissance, with a team too small for a dungeon of this latent threat level...”

She shook her head, turning her piercing gaze to Tia. ”Honestly, to mount an unauthorized expedition on a personal vendetta? You’re lucky the Crown is more interested in the anomaly than in court-martialing you for losing a quarter of the city’s elite Vanguard.”

Tia flinched, but didn’t back down. ”We had received temporary permission from the guild for a suppression mission. We also didn’t expect such a powerful and aggressive anomaly. We weren’t prepared for what that creature really was. Or its allies.”

”A coordinated monster pack with tactical intelligence,” Derek mused, hefting his great axe—a weapon as tall as a man onto his shoulder. ”That changes things. And this ’anomaly’... your report described it as a serpent, but not like any wyrm or drake on record.”

”More than a serpent,” Tia insisted, a shadow of genuine fear crossing her features. ”It used skills. Composite, high-tier skills. It led the others. It commanded them.”

Ellen’s eyes narrowed. ”Sentient dungeon lords are rare, but not unheard of. The real question is, what is its goal? And where is it now?”

Before Tia could offer another theory, the lead vanguard knight raised a clenched fist—the signal to halt. The column froze, weapons sliding from sheaths with soft, metallic whispers. They had entered a new biome: a vast, subterranean forest. Or what was left of one.

Giant luminescent fungi, once towering like trees, now lay splintered and oozing viscous sap. The air was thick with the cloying scent of rot and the sharper, acrid sting of venom. The ground was a churned mess of soil and shattered chitin, scarred by deep trenches and blackened by fire. It was a landscape of utter devastation.

”This is it,” Tia said, her voice barely above a whisper. She pointed to a cluster of massive, toadstool stumps. ”Here is where Resmond’s team made their final stand. And where we... were lost.”

Derek strode forward, his crimson eyes missing nothing. He saw the signs of a desperate, multi-angled battle: swathes of fungus withered to crumbling husks by void energy, patches of earth fused into glass by solar heat, deep grooves carved by massive coils, and the distinctive, clean-punctured holes left by piercing attacks. But his gaze quickly settled on what wasn’t there.

”There are no bodies,” he rumbled, the statement cutting through the tense silence.

The party spread out, conducting a grim search. Knights overturned debris. Scouts sifted through the mulch. But they found nothing—no remains, no broken armor, not even a discarded weapon. Only dark, flaky stains on the ground and fungus that could only be long-dried blood.

”It’s clean,” a scout reported, confusion and unease in his tone. ”Too clean. It’s like they were... taken. Completely.”

Ellen crouched, rubbing a dark stain between her fingers. It turned to dust. ”This is worse than just losing a team. A monster that consumes humans whole, leaving no trace... that’s not just hunting. It’s harvesting. And that makes it a profound problem.”

Tia nodded, wrapping her arms around herself as if cold. ”It consumes whatever it can to grow stronger. If it’s satisfied with dungeon fare, that’s one thing. But if it develops a preference for human essence... an addiction... it won’t stop at defending its home. It will become an active, aggressive hunter of our kind.”

A new, lighter voice chimed in from near a crumbling fungal column. ”Are we drawing parallels to the Troll Monarch incident that ravaged the Duke’s northern territory? I heard that beast developed quite the insatiable palate.”

They turned. Leaning against the pale stalk was a figure in deep indigo robes, a wide-brimmed, pointed hat casting a shadow over his face. He pushed the hat back, revealing youthful, almost delicate features, sharp blue eyes, and a smile that seemed perpetually amused. He looked like a precocious adolescent, but the dense, shimmering field of controlled mana that clung to him like a second skin announced a mage of significant power.

”Westin,” Ellen said, a flicker of surprise in her sharp green eyes. ”The Arcane Collegium’s rising star. I didn’t expect to see you signing on for a grunt operation like this.”

”The remuneration is exceptional,” Westin replied with an airy wave of his hand, straightening up. The simple, darkwood staff he carried thumped softly on the soft earth. ”So, who would say no? But do answer my question.”

Tia did, her voice gaining strength with grim certainty. ”Exactly. The Troll Monarch started with livestock, then a shepherd, then a village. Each taste of human life-force made it stronger and more frenzied. It took a company of knights and three court mages to bring it down. If this serpent is already consuming skilled adventurers... the pattern could be the same. It could escalate into a threat requiring a full army to quell.”

Westin’s playful smile vanished, replaced by a look of cold calculation. He paced over to a wide area of scorched earth, studying it. ”And you report it exhibits command intelligence, coordination with other evolved entities. If that’s true, and it’s cultivating a taste for ’premium prey’...” He looked up, his blue eyes catching the faint fungal light. ”Then this isn’t a dungeon clearance. It’s a preemptive strike against a potential calamity for the Kingdom of Solaria. Possibly for the surface world, should it ever emerge.”

A murmur of uneasy agreement rippled through the seasoned adventurers. The stakes of their mission had just been cast in a far more urgent, terrifying light.

Derek’s voice, like grinding stone, cut through the murmur. ”Then it’s fortunate our task is to ensure that never happens.” He planted his great axe firmly on the ground. ”We find it. We erase it. Before its appetite grows beyond these caves.” He turned his burning gaze to Westin. ”Mage. Can you sift through this sensory garbage and find the freshest trail? The one that leads to our predator’s den?”

Westin’s demeanor shifted entirely to one of focused intensity. He raised his staff, and the crystal at its tip glowed with a piercing azure light. ”The residual energies here are a chaotic. But I will try, give me a minute”

As Westin began his arcane work, Ellen moved close to Derek, her voice low. ”If it’s as intelligent as they fear, it won’t be waiting passively. It could be leading us into a trap.”

”Let it try,” Derek growled, his hand tightening on the haft of his axe. ”Cunning or not, it’s still a beast in a hole.”

She let Derek’s bravado hang in the stagnant air. Her sharp eyes scanned the gloom of the area once more, then fixed on Tia, who was watching Westin with rigid attention. A question, buried since reading the after-action report, now clawed its way to the surface.

”One thing the report was unclear on.” Ellen began, her tone cutting through the low hum of magic. ”Who was the actual leader of the Vanguard team? Official mandate said it was you, the Deputy Guild Master. But from the tactical decisions described—the aggressive push, the refusal to retreat—it sounds like Resmond was calling the shots. Why?”

The question landed heavily in the damp air. Tia’s shoulders slumped slightly, a shadow of guilt and professional shame crossing her face. She looked away from Ellen’s piercing gaze, focusing on a shattered mushroom cap.

”You’re right,” Tia admitted, her voice low. ”Officially, I had the authority. But in practice... Resmond had the field command. The team trusted him more. They followed him more instinctively.”

She took a steadying breath, forcing herself to meet Ellen’s eyes. ”He was a Knight-Captain, a veteran of the northern demon-skirmishes. He’d led dozens of delves and survival ops. And I... my expertise is logistics, administration, threat assessment from a distance. I’m an A-Rank, yes, but my strength is in support, coordination, not front-line tactical command in a live-or-die situation.”

She gestured helplessly at the scarred battlefield. ”When we encountered the first signs of the serpent’s pack, I advised caution, a tactical withdrawal to reassess. But Resmond... He argued that showing weakness would invite immediate attack, that we had the firepower to crush a single anomaly. The team... they looked to him. They believed in his experience, his instincts, his battle-lust. And I deferred. I let his grief and his seniority override my own judgment. I became the advisor, not the commander.”

Her confession hung in the air, a stark admission of how the chain of command had fatally unraveled. ”He was the dominant force. I failed to assert the authority I was supposed to hold. And by the time I realized his judgment was compromised by vengeance, it was too late. We were surrounded, outmaneuvered, and broken.”

Derek listened, his expression unreadable. It was a common enough tragedy in their line of work—personal emotion corroding professional discipline.

Westin, still softly channeling his detection spell, gave a soft, knowing hum. ”Ah. The old story. The heart’s compass overriding the mind’s map. Leads to interesting places, usually of the fatal variety.”

Ellen studied her for a long moment, then gave a single, slow nod. It wasn’t forgiveness—Ellen didn’t deal in that. It was assessment. ”Understood. The psychological variable of a grief-crazed subordinate with unit loyalty is a tactical factor I will now account for. Your failure has provided data. Ensure it is not repeated.”

Her words were brutally cold, but in their own way, they offered Tia a grim absolution: her mistake was now a lesson, a piece of intelligence for the next, more lethal wave. The conversation was over. Ellen had what she needed.

Nearby, Westin’s staff flared brightly. ”Got it,” the young mage announced, a trace of triumph in his voice. ”The dominant trail. It leads down. Much deeper. And it’s... layered. There are multiple powerful signatures moving together.”